Embodied energy and cost of high temperature thermal energy storage systems for use with concentrated solar power plants
Fernández Renna, Ana Inés
MetadataShow full item record
The intermittency of renewable energy systems remains one of the major hurdles preventing a large scale uptake of these technologies and concentrated solar power (CSP) systems are no different. However, CSP has the benefit of being able to store excess heat using thermal energy storage (TES). For the uptake of CSP with TES it must be demonstrated that the technology is both economically as well as environmentally feasible. This paper aims to investigate the economic and environmental impact of several TES options that are available for CSP systems. The investigated systems include an encapsulated phase change material (PCM) system, a coil-in-tank PCM system and a liquid sodium TES system. The economic impact in the current study refers to the capital cost (CAPEX) of each system including the tank, storage material, encapsulation cost (if applicable) and allowances for construction and engineering. The environmental impact of each system is accounted by calculating the embodied energy of each of the system components. Each storage system will be required to store a comparable amount of energy so that reliable conclusions can be drawn. The results from this analysis conclude that the encapsulated PCM (EPCM) and coil-in-tank system represent an embodied energy of roughly one third of the corresponding state-of-the-art two-tank molten salt system. Furthermore, the EPCM and coil-in-tank systems result in CAPEX reductions of 50% and 25% over the current state-of-the-art two-tank molten salt system. The liquid sodium system was found to result in higher embodied energy and CAPEX than any previously studied TES system. Finally, the advantages and disadvantages of each system was discussed and compared to previous literature.
Is part ofApplied Energy, 2016, vol. 180, p. 586–597
European research projects
The following license files are associated with this item:
Showing items related by title, author, creator and subject.
Considerations for the use of metal alloys as phase change materials for high temperature applications Fernández Renna, Ana Inés; Barreneche Güerisoli, Camila; Belusko, Martin; Segarra Rubí, Mercè; Bruno, Frank; Cabeza, Luisa F. (Elsevier, 2017)The use of paraffin, salts and salt hydrates as phase change materials (PCMs) have been researched extensively and used in a number of commercial applications. However, metals and metal alloys, which possess a high storage ...
Solé, Aran; Falcoz, Quentin; Cabeza, Luisa F.; Neveu, Pierre (Elsevier, 2018)In the present study, geometry optimization of a phase change material (PCM) heat storage system is presented. The existing PCM-fins heat exchanger system works at the back side of a solar receiver in order to minimize the ...
Experimental investigation of the effect of dynamic melting in a cylindrical shell-and-tube heat exchanger using water as PCM Gasia, Jaume; Tay, N. H. Steven; Belusko, Martin; Cabeza, Luisa F.; Bruno, Frank (Elsevier, 2017)In the present paper, an experimental study is carried out to evaluate the effect of the dynamic melting concept in a cylindrical shell-and-tube heat exchanger using water as the phase change material (PCM) and a potassium ...